What is the English word for a person who spends too much time thinking about philosophy and stuff and never actually gets anything done

I came across a word-of-the-day in the Merriam-Webster dictionary in late 2019. It described a person who gives a lot of his time to philosophising and stays away from the actual world and his responsibilities. Does anyone know what this refers to?

Solution 1:

Are you looking for the word luftmensch (MW Word of the Day: August 1, 2019)?

an impractical contemplative person having no definite business or income

They give this example referring to a philosopher:

"People like Luftmenschen, and they've liked them for a long time. The image of Thales, called the world's first philosopher, cannot be proven, but it's comforting to think that intellectuals have their heads in the clouds and stumble into the well before their feet." — Susan Neiman, Einstein for the 21st Century, 2008

If not, take a look at the archived snapshot of all of MW's WotDs and see if you recognize the word.